Dr. Thomas is interested in studying students' depression levels at different points in the semester (5 weeks, 10 weeks, & 15 weeks). However, he wants to take it one step further by comparing these levels between students who take classes fully online and those who take classes fully in-person. He believes depression will increase significantly throughout the semester and that it will be significantly different between the two learning platforms. Further, he believes there will be a significant interaction between the two variables